Katherine Cunningham

Severide hides his serious shoulder injury as he tries to rescue a construction worker from a collapsed building; two teens become trapped in a vehicle.

Meredith heads up a pro bono surgery day, but the overwhelming patient response causes her to struggle to keep things in order; DeLuca treats a teenage patient whom he suspects is in danger.

Torres is reminded of a tragic time from his past when Gibbs and the NCIS team reinvestigate a murder case to carry out a sailor's dying wish.

Peter is deeply shaken by the dead body of a young victim; Severide's injury is aggravated.

Severide is made an enticing offer by a woman he saved from a car crash while the crew bid farewell to a colleague after a blaze at a garage.

An expert in human behaviour named Clark opens a unique agency with his brother, a recently incarcerated former con artist, where they use psychological manipulation to solve people's problems.